MERSTech, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8482945 Power converter with magnetic recovery switchExpiredSep 26, 08Jul 09, 13[H02M, H02H]
8384333 Alternating voltage control apparatusExpiredMay 15, 09Feb 26, 13[H02P]
2013/0010,507 PROTECTED POWER CONVERSION DEVICE AND CONTROL METHODAbandonedJan 14, 11Jan 10, 13[H02H]
8274767 Magnetic energy regeneration switch provided with protection circuitExpiredNov 13, 08Sep 25, 12[H02H]
2012/0218,798 POWER CONVERSION DEVICEAbandonedOct 08, 10Aug 30, 12[H02M]
2012/0037,616 POWER INVERTERAbandonedOct 27, 09Feb 16, 12[H02M, H05B, H02P]
8045309 Magnetic energy recovery switch having protective circuitExpiredFeb 20, 08Oct 25, 11[H02H]
2011/0199,061 AC VOLTAGE CONTROL DEVICEAbandonedOct 28, 08Aug 18, 11[G05F]
2011/0115,417 PM MOTOR DRIVE POWER SUPPLY APPARATUSAbandonedJun 27, 08May 19, 11[H02P]
2011/0109,239 ILLUMINATION CONTROL DEVICEAbandonedJul 03, 08May 12, 11[H05B]
7919887 High repetitous pulse generation and energy recovery systemExpiredFeb 18, 09Apr 05, 11[H03K]
2011/0012,251 SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAMEAbandonedJul 09, 10Jan 20, 11[H01L]
7843166 Alternating-current power supply device recovering magnetic energyExpiredJun 23, 09Nov 30, 10[H02J]
2007/0159,279 Alternating-current power supply device recovering magnetic energyAbandonedMay 12, 04Jul 12, 07[H01H]
2006/0152,955 Pulse power supply for regenerating magnetic energyAbandonedAug 18, 03Jul 13, 06[H02M]

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